Method of lining bearing-backs



C. W. EGGENWEILER.

METHOD OF LINING BEARING BACKS.

APPLICATION FILED APR. 15, 1920.

1,399,25 Patelited Dec. 6, 1921.

amen atom Carde; EIIZl/(Zdt/ UNITED STATES PATENT OFFICE.

CHARLES W. OF DETROIT, MICHIGAN, ASSIGNOR TO GENERAL ALUMI- NUM & BRASSMFG. COMPANY, OF DETROIT, MICHIGAN, A CORPORATION O MICHIGAN.

METHOD 7 OF LINING BEARING-BACKS.

Specification of Letters Patent.

Patented Dec. 6, 1921.

Application an April s; 1920. Serial No. 374,012.

To all whom it may concern:

Be it known that I, CHARLES W. EGGEN- WElLER, a citizen of the UnitedStates of America, residing at Detroit, in the county of Wayne and Stateof Michigan, have invented certain new and useful Improvements inMethods of Lining Bearing-Backs, of which the following is aspecification, reference being had therein to the accompanying drawings.

The invention relates to bearings and refers particularly to the methodof lining bearing backs. The object of the invention is to secure auniformly distributed lining in a bearing back, which will have the sameproperties throughout. Other objects of the invention reside in thenovel features as more fully hereinafter set forth.

In the drawings:

The figure is a diagrammatic view of a mechanism in perspective forcarrying out my method.

In general the bearing backs which are hollow are rotated with themolten bearingmetal alloy therewithin until the alloy has solidified inorder to secure the even distribution of the alloy upon the innersurface of the bearing back. Since the bearing-metal alloy is composedof elements of different specific gravity as, for'example, copper, tinan antimony the elements have a strong tendency to segregate before thealloy has solidified due to centrifugal force. This segregation of theelements of the alloy produces a lining which does not have the sameuniform properties and which is therefore objectionable. With my methodthis segregation of the elements of the alloy is prevented.

Referring to the mechanism diagrammatically shown in the drawings, 1 and2 are series of cooperating holders arranged in pairs and adapted toclamp the cylindricalbea'ring backs 3 therebetween. The holders arecontinuously rotated about their re-- spective axes and, as shown, thebelt 4 extends therearound. The holders 2 are all directly rotated withone exception, these holders being mounted upon shafts 5 t which pulleys6 are secured and around which the driving belt 7 extends, this beltbeing driven from a pulley 8 suitably driven as by an electric motor.(Not shown.) The pulleys 6 and the pulley 8 are normally in a commonplane while the pulley 6 which is bearing back,

not in driving engagement with the belt 7 i may be readily moved toWithdraw its respective head 2 from its cooperating head 1 to permit ofthe removal and replacement of a bearing back. j

For the purpose of feeding molten bearing-metal alloy to the bearingback, the nozzle 9 is provided connected to the pump 10, this pumphaving the plunger 11 vertically movable within the cylinder 12 and thecylinder having inlet apertures 13 for the entrance of the molten alloywhen the plunger is in raised position. The bearing back is underrotation when this molten alloy is fed thereinto so that upon continuedrotation of the bearing back to uniformly distribute the molten alloythere is great liability of the elements of the alloy moving relativelyto each other in a rad al direction, or segregating, since theseelements are of different specific gravity and since rotation. of thebearing back must be maintained until the molten alloy has solidified.In order to prevent this segregation of the alloy elements the moltenalloy is subjected to a suitable cooling medium before an appreciabletime interval has elapsed after the molten alloy has been fed into thebearing back. As shown, the rotating hearing back is moved to anotherposition after 'the molten alloy has been fed thereinto and in thisposition the bearing back is in substantial axial alinement with theconduit 14- which conduit is adapted to conduct water under pressureadjacent to one end of the the pressure being sufficient to force thewater into the bearing back and into contact with the molten alloy. Asuitable valve 15 in the conduit let controlsthe amount of water passingtherethrough.

This water coming in contact with the molten alloy suddenly solidifiesthe latter and thereby prevents segregationof the alloy elements due tocentrifugal force caused by the rotation of the bearing back.

For withdrawing the water vapor or steam formed by the water coming incontact with the hot, molten alloy the holder has the rotary fan ortion'16 in communication with the interlor of the bearing back, whichwithdraws the water vaporor steam therefrom.

What I claim as my invention is:

1. The method of lining bearing backs, comprising the rotating of thebearing back,

with water during rotation of the bearln back and the simultaneouswithdrawing o the vapor formed within the bearing back.

2. The method of lining bearing backs, comprising the rotating of thebearin back with molten bearing-metal e110 t erein, and the drawing ofa. cooling medium therethrou%h tocool the alloy.

3. he method of lining bearing backs, comprising the rotating pf thebearing back with molten bearing-metal alloy therein, and the subjectingof the molten alloy with Liquid during the rotation of the bearing- 4.The method of lining bearing backs, comprising the rotating, of thebearing back with molten bearing-metal alloy therein, the feeding of acooling liquid into the bearing back and into contact with the bearingmetal alloy, and the withdrawin of the vapor formed within the bearingback.

In'testimon whereof I afiixm signature.

CHAR ES W. EGGEN EILER.

